Abstract: An electrical power system includes: an electrical machine to output AC; DC electrical network; power electronics converter connected between the AC output of the electrical machine and the DC electrical network and having a phase leg having first and second branches respectively having first and second bi-directional MOSFETs; and controller controlling switching of the first and second bi-directional MOSFETs of each phase leg of the converter so that current is commutated between the phase leg first and second branches rectifying the AC input to DC to supply the DC electrical network with DC electrical power. The controller is responsive to a determination to the effect that there is a fault in the DC electrical network, to control the switching of each phase leg first and second bi-directional MOSFETs to switch the converter into a crow-bar configuration in which electrical machine current does not flow to the DC network.

Abstract: A power electronics converter comprising: first and second input terminals; first and second DC output terminals; a branch comprising first and second semiconductor switches connected in series between the first and second DC output terminals, the first input terminal connected to a node between the first and second semiconductor switches; a DC link capacitor connected between the first and second DC output terminals; and a reverse biased DC link diode connected across the DC link capacitor.

Abstract: Controlled delivery of magnetic particles (e.g., nanoparticles) in combination with therapeutic, diagnostic and/or theranostic agents is described. The magnetic particles may be delivered through a catheter to a location adjacent a therapeutic and/or diagnostic target or region.

Abstract: This disclosure generally relates to systems and methods for facilitating flow within vasculature or other body lumens, channels or passages involving a magnetic field generated by an external magnetic control system and/or facilitating clearance of obstructions (e.g., clots, fluid obstructions) within in-dwelling devices (e.g., shunts, drains, conduits, ports, catheters) involving magnetic particles (e.g., nanoparticles, microparticles) controlled by an external magnetic control system (e.g., one or more rotating permanent magnets or an electromagnetic control system).

Abstract: A bicycle control assembly may be provided for operating an electromechanical gear shifting device. The control assembly includes a graspable housing mountable to the bicycle, a power supply connected to the control assembly disposed in the housing, a first operating member movably connected to the housing, and electronic componentry disposed on the first operating member. The electronic componentry may include an electrical switch, a controller in communication with the electrical switch and configured to generate a signal to change a shift position of the gear shifting device responsive to an input from the electrical switch, and an antenna in communication with the controller and configured to send the signal. The control assembly may also include a cable extending from the housing to the first operating member connecting the power supply and the electronic componentry.

Abstract: A gas turbine engine with a closed loop working fluid cycle.

Abstract: A firearm maintenance aid can include a firearm vise and a firearm support device. Firearm vise can include vise jaws, a threaded rod connecting vise jaws together, and jaw pin holes in each jaw, the holes extending from an outer surface of a jaw through to an inner surface of each jaw, wherein the holes in the first jaw align with the holes in the second jaw. Firearm support device can include a clamping portion and a supporting portion. The clamping portion can be clamped between the jaws of the firearm vise, can include two parallel clamping faces, and can define vise pin holes that align with the jaw pin holes. The supporting portion can be located opposite the clamping portion and can include a cylindrical shaft. Vise pins can be received by the jaw pin holes and vise pin holes to fixedly connect the support device to the vise.

Abstract: A slide capture handgun sight pusher can include a handgun sight adjustment device that can include a frame having a front and back face where a central opening can be disposed therethrough, along with a first and second side. Further included can be a firearm slide catch mechanism that can be structured to attach to the internal rails of a firearm's slide, having an adjustable sight. The firearm slide catch can include a cap, an adjustment knob, and a shaft that can be disposed between the cap and adjustment knob, where the adjustment knob can be configured to change a distance between the cap and the first side. The firearm slide catch can work in conjunction with various shims to adjust to fit the firearm slide with the sight adjustment device. This may include a sight pusher that may include a press-block tooth having multiple engagement surfaces.

Abstract: A slide capture handgun sight pusher can include a handgun sight adjustment device that can include a frame having a front and back face where a central opening can be disposed therethrough, along with a first and second side. Further included can be a firearm slide catch mechanism that can be structured to attach to the internal rails of a firearm's slide, having an adjustable sight. The firearm slide catch can include a cap, an adjustment knob, and a shaft that can be disposed between the cap and adjustment knob, where the adjustment knob can be configured to change a distance between the cap and the first side. The firearm slide catch can work in conjunction with various shims to adjust to fit the firearm slide with the sight adjustment device. This may include a sight pusher that may include a press-block tooth having multiple engagement surfaces.

Abstract: An adjustable support stand can include a front support on a first end of the adjustable support stand having a grip comprised of a first, front support material; and a rear support on an opposing, second end of the adjustable support stand having a grip comprised of a first, rear support material, wherein the front and the rear supports can each have at least two vertical arms, at least one of the supports can have vertically stacked chevron voids on each arm, and the chevron voids can be deformable by the object being worked upon to secure and grip the object in place.

Abstract: This disclosure generally relates to systems and methods for facilitating determination of morphology (e.g., shape) and structure (e.g., size, rigidity) and/or penetrating channels (e.g., microchannels) of occlusions (e.g., clots, fluid obstructions, tumors, chronic total occlusions) involving magnetic particles (e.g., nanoparticles, microparticles) controlled by an external magnetic control system.

Abstract: A leveling system for a clamping device can include a base having a top, a bottom, and a plurality of sides; and a leveling knob positioned on one of the plurality of sides of the base and comprising a spring, a pin, and a knob connected at an outer end of the shaft. The spring can be compressible when the knob is pulled away from the base. In a locked configuration, the leveling knob can be at a neutral angle and in a home position with the pin positioned within the base. The pin can be removable from the base when the spring is compressed. The leveling knob can be twistable in at least one of clockwise and counterclockwise rotations when the pin is removed from the base.

Abstract: A system includes one or more processors configured to track working hours of one or more crew members of a vehicle system as the vehicle system travels. The one or more processors are configured to control the vehicle system to one or more of stop movement of the vehicle system, slow movement of the vehicle system, prevent movement of the vehicle system from a stationary position, or control movement of the vehicle system to an alternative location, responsive to one or more of (i) determining that the working hours of the one or more crew members exceed a prescribed service limit, (ii) determining that the working hours are projected to exceed the prescribed service limit before the vehicle system reaches a designated location, or (iii) determining that the working hours are within a designated time window before the prescribed service limit.

Abstract: A bicycle control assembly may be provided for operating an electromechanical gear shifting device. The control assembly includes a graspable housing mountable to the bicycle, a power supply connected to the control assembly disposed in the housing, a first operating member movably connected to the housing, and electronic componentry disposed on the first operating member. The electronic componentry may include an electrical switch, a controller in communication with the electrical switch and configured to generate a signal to change a shift position of the gear shifting device responsive to an input from the electrical switch, and an antenna in communication with the controller and configured to send the signal. The control assembly may also include a cable extending from the housing to the first operating member connecting the power supply and the electronic componentry.

Abstract: A firearm magazine tool including a core having a floor on its top, a channel rib on the core, a cavity, a frame surrounding the core and the cavity, a lever pin projecting from the core into the cavity, and a slider pin projecting orthogonally from the floor. The channel rib can be an elongate projection running a partial length of the core. The core can be inset within the frame such that two internal frame side walls and an internal frame end wall are at least partially exposed above the floor. The cavity can be located between the core and a lever wall, the lever wall being located on an opposite end of the frame than the internal frame end wall. The firearm magazine tool can be further comprised of a channel on a bottom surface of the core, wherein the channel rib is located in the channel.

Abstract: Techniques described herein relate to a method for identifying downhole conditions during a drilling operation using a vibratory separator. The method includes calibrating a sensor system attached to the vibratory separator by periodically measuring the G-force acting on the vibratory separator functioning under steady-state operating parameters. The method also includes determining the relationship between the G-force acting on the vibratory separator and the flow rate and rate of penetration (ROP) for the drilling operation by measuring the G-force acting on the vibratory separator functioning under different non-steady-state operating parameters.

Abstract: A turbine vane includes an airfoil that extends from an inner diameter to an outer diameter, and from a leading edge to a trailing edge. The turbine vane includes an inner platform coupled to the airfoil at the inner diameter. The turbine vane includes a cooling system defined in the airfoil including a first conduit in proximity to the leading edge to cool the leading edge and a second conduit to cool the trailing edge. The first conduit has an inlet at the outer diameter to receive a cooling fluid and an outlet portion that is defined at least partially through the inner platform. The first conduit includes a plurality of cooling features that extend from a first surface of the first conduit, and the first surface of the first conduit is opposite the leading edge.

Abstract: A system comprises a computer including a processor and a memory. The memory includes instructions such that the processor is programmed to: predict, at a trained machine learning classifier, a target slip value based on a predicted slip slope and a predicted road texture, wherein the predicted slip slope and the predicted road texture are determined using sensor data representing tire forces and modify at least one vehicle action based on the target slip value when a confidence level value corresponding to the target slip value is greater than or equal to a confidence level threshold.